Home / 42,741.78-64,107.65-17,775.35

Finding the Fourth Proportional to 42,741.78, 64,107.65 and 17,775.35

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Solution

The fourth proportional to 42,741.78, 64,107.65 and 17,775.35 is: 26,660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,741.78 : 64,107.65 = 17,775.35 : x
  2. Step 2: Convert to fraction form
    42,741.78/64,107.65 = 17,775.35/x
  3. Step 3: Cross multiply
    42,741.78x = 64,107.65 × 17,775.35
  4. Step 4: Simplify right side
    42,741.78x = 1,139,535,880.73
  5. Step 5: Solve for x
    x = 1,139,535,880.73/42,741.78
  6. Step 6: Final answer
    x = 26,660.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.